#include "csapp.h"
#define N 2

int main()
{
int status,i;
pid_t pid;


for(i=0;i<N;i++)
if((pid=Fork())==0)
exit(100+1);


while((pid=waitpid(-1,&status,0))>0){
if(WIFEXITED(status))
printf("child %d terminated normally with exit status=%d\n",
pid,WEXITSTATUS(status));
else
printf("child %d terminated abnormally\n",pid);
}


if(errno !=ECHILD)
unix_error("waitpid error");

exit(0);
}

